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[edumed.git] / stage2 / models.py

diff --git a/stage2/models.py b/stage2/models.py
index 8ffa255..244322d 100644 (file)
--- a/stage2/models.py
+++ b/stage2/models.py
@@ -3,21 +3,31 @@ import os
 import random
 import string
 
 import random
 import string
 

-from django.contrib.auth.models import User
+from django.conf import settings

 from django.core.urlresolvers import reverse
 from django.db import models
 from django.core.urlresolvers import reverse
 from django.db import models

+from django.db.models.signals import post_save
+from django.dispatch import receiver
+from django.utils.html import format_html, strip_tags
+from django.utils.translation import ugettext_lazy as _
+from django.utils import timezone

 from jsonfield import JSONField
 
 from contact.models import Contact
 
 
 class Participant(models.Model):
 from jsonfield import JSONField
 
 from contact.models import Contact
 
 
 class Participant(models.Model):

-    contact = models.ForeignKey(Contact, null=True)
-    key = models.CharField(max_length=30, unique=True)
-    first_name = models.CharField(max_length=100)
-    last_name = models.CharField(max_length=100)
-    email = models.EmailField(max_length=100, unique=True)
-    key_sent = models.BooleanField(default=False)
+    contact = models.ForeignKey(Contact, verbose_name=_('contact'), null=True)
+    key = models.CharField(_('key'), max_length=30, unique=True)
+    first_name = models.CharField(_('first name'), max_length=100)
+    last_name = models.CharField(_('last_name'), max_length=100)
+    email = models.EmailField(_('email'), max_length=100, unique=True)
+    key_sent = models.BooleanField(_('key sent'), default=False)
+    complete_set = models.BooleanField(default=False)
+
+    class Meta:
+        verbose_name = _('participant')
+        verbose_name_plural = _('participants')

 
     def __unicode__(self):
         return ', '.join((self.last_name, self.first_name, self.email))
 
     def __unicode__(self):
         return ', '.join((self.last_name, self.first_name, self.email))


@@ -44,32 +54,200 @@ class Participant(models.Model):
     def check(self, key):
         return key == self.key
 
     def check(self, key):
         return key == self.key
 

+    def score(self):
+        return sum(answer.score() for answer in self.answer_set.all())
+

 
 class Assignment(models.Model):
 
 class Assignment(models.Model):

-    title = models.CharField(max_length=128)
-    content = models.TextField()
-    deadline = models.DateTimeField()
-    max_points = models.IntegerField()
-    file_descriptions = JSONField()
+    title = models.CharField(_('title'), max_length=128)
+    content = models.TextField(_('content'))
+    content_url = models.URLField(_('URL'))
+    deadline = models.DateTimeField(_('deadline'))
+    max_points = models.IntegerField(_('max points'))
+    experts = models.ManyToManyField(
+        settings.AUTH_USER_MODEL, verbose_name=_('experts'), related_name='stage2_assignments')
+    arbiters = models.ManyToManyField(
+        settings.AUTH_USER_MODEL, blank=True, verbose_name=_('arbiters'), related_name='stage2_arbitrated')
+    supervisors = models.ManyToManyField(
+        settings.AUTH_USER_MODEL, verbose_name=_('supervisors'), related_name='stage2_supervised')
+    file_descriptions = JSONField(_('file descriptions'), default=[], blank=True)
+    field_descriptions = JSONField(_('field descriptions'), default=[], blank=True)

 
     class Meta:
 
     class Meta:

-        ordering = ['deadline']
+        ordering = ['deadline', 'title']
+        verbose_name = _('assignment')
+        verbose_name_plural = _('assignments')

 
     def __unicode__(self):
         return self.title
 
 
     def __unicode__(self):
         return self.title
 

+    def available_answers(self, expert, marked=False):
+        if marked:
+            return self.answer_set.filter(mark__expert=expert).order_by('id').distinct('id')
+        answers = self.answer_set.exclude(mark__expert=expert)
+        assigned_to_expert = self.answer_set.filter(experts=expert).exists()
+        is_supervisor = expert in self.supervisors.all()
+        is_arbiter = expert in self.arbiters.all()
+        if assigned_to_expert:
+            expert_answers = answers.filter(experts=expert)
+            if expert_answers or not is_arbiter:
+                answers = expert_answers
+        answers = answers.extra(where=[
+            "field_values::text ~ ': *\"[^\"]+\"' "
+            "OR EXISTS (SELECT id FROM stage2_attachment WHERE answer_id = stage2_answer.id) "
+            "OR EXISTS (SELECT id FROM stage2_fieldoption WHERE answer_id = stage2_answer.id)"])
+        if not is_supervisor:
+            answers = answers.exclude(complete=True)
+        if not is_supervisor or not self.is_active():
+            answers = answers.filter(participant__complete_set=True)
+        if is_arbiter:
+            answers = answers.filter(need_arbiter=True)
+        return answers
+
+    def field_counts(self, answers):
+        for field_desc in self.field_descriptions:
+            field_name, params = field_desc
+            if params['type'] == 'options':
+                field_count = FieldOption.objects.filter(
+                    answer__in=list(answers), set__name=params['option_set']).count()
+            else:  # text, link
+                field_count = sum(1 for answer in answers if answer.field_values.get(field_name))
+            yield field_name, field_count
+
+    def expert_counts(self):
+        for expert in self.experts.all():
+            assigned_count = self.answer_set.filter(experts=expert).count()
+            marked_count = self.available_answers(expert, marked=True).count()
+            if assigned_count != 0 or marked_count != 0:
+                yield expert, marked_count, assigned_count
+
+    def complete_answers(self):
+        return self.answer_set.filter(complete=True)
+
+    def needing_arbiter(self):
+        return self.answer_set.filter(need_arbiter=True)
+
+    def is_active(self):
+        return self.deadline >= timezone.now()
+
+
+class MarkCriterion(models.Model):
+    assignment = models.ForeignKey(Assignment)
+    order = models.IntegerField()
+    label = models.CharField(max_length=1024)
+    max_points = models.IntegerField()
+
+    class Meta:
+        ordering = ['order']
+        unique_together = ['assignment', 'order']
+
+    def __unicode__(self):
+        return strip_tags(self.form_label())
+
+    def form_label(self):
+        return '%s. %s' % (self.order, self.label)
+

 
 class Answer(models.Model):
     participant = models.ForeignKey(Participant)
     assignment = models.ForeignKey(Assignment)
 
 class Answer(models.Model):
     participant = models.ForeignKey(Participant)
     assignment = models.ForeignKey(Assignment)

+    field_values = JSONField(_('field values'), default={})
+    experts = models.ManyToManyField(
+        settings.AUTH_USER_MODEL, verbose_name=_('experts'), related_name='stage2_assigned_answers')
+    # useful redundancy
+    complete = models.BooleanField(default=False)
+    need_arbiter = models.BooleanField(default=False)

 
     class Meta:
         unique_together = ['participant', 'assignment']
 
 
     class Meta:
         unique_together = ['participant', 'assignment']
 

+    def fields(self):
+        for field_desc in self.assignment.field_descriptions:
+            field_name, params = field_desc
+            if params['type'] == 'options':
+                option = self.fieldoption_set.filter(set__name=params['option_set'])
+                value = option.get().value if option else '--------'
+            else:  # text, link
+                value = self.field_values.get(field_name, '')
+            if params['type'] == 'link':
+                value = format_html(u'<a href="{url}">{url}</a>', url=value)
+            yield field_name, value
+
+    def total_points(self):
+        criterion_count = self.assignment.markcriterion_set.count()
+        for expert_id in self.mark_set.values_list('expert_id', flat=True).distinct():
+            marks = self.mark_set.filter(expert_id=expert_id)
+            if len(marks) == criterion_count:
+                yield sum(mark.points for mark in marks)
+
+    def update_complete(self):
+        total_points = list(self.total_points())
+        if len(total_points) < 2:
+            complete = False
+            need_arbiter = False
+        elif len(total_points) == 2:
+            points1, points2 = total_points
+            complete = abs(points1 - points2) < 0.2 * self.assignment.max_points
+            need_arbiter = not complete
+        else:
+            complete = True
+            need_arbiter = False
+        self.complete = complete
+        self.need_arbiter = need_arbiter
+        self.save()
+
+    def score(self):
+        total_marks = list(self.total_points())
+        if len(total_marks) < 2:
+            return None
+        return sum(total_marks) / len(total_marks)
+
+    # unrelated to `complete' attribute, but whatever
+    def is_complete(self):
+        file_count = len(self.assignment.file_descriptions)
+        field_count = len(self.assignment.field_descriptions)
+        if self.attachment_set.count() < file_count:
+            return False
+        if self.fieldoption_set.count() + sum(1 for k, v in self.field_values.iteritems() if v) < field_count:
+            return False
+        return True
+
+
+class FieldOptionSet(models.Model):
+    name = models.CharField(verbose_name=_('nazwa'), max_length=32, db_index=True)
+
+    class Meta:
+        verbose_name = _('option set')
+        verbose_name_plural = _('option sets')
+
+    def __unicode__(self):
+        return self.name
+
+    def choices(self, answer):
+        return [('', '--------')] + [
+            (option.id, option.value)
+            for option in self.fieldoption_set.extra(
+                where=['answer_id is null or answer_id = %s'],
+                params=[answer.id])]
+
+
+class FieldOption(models.Model):
+    set = models.ForeignKey(FieldOptionSet, verbose_name=_('zestaw'))
+    value = models.CharField(verbose_name=_('value'), max_length=255)
+    answer = models.ForeignKey(Answer, verbose_name=_('answer'), null=True, blank=True)
+
+    class Meta:
+        ordering = ['set', 'value']
+        verbose_name = _('option')
+        verbose_name_plural = _('options')
+
+    def __unicode__(self):
+        return self.value
+

 
 def attachment_path(instance, filename):
     answer = instance.answer
 
 def attachment_path(instance, filename):
     answer = instance.answer

-    return 'stage2/attachment/%s/%s/%s' % (answer.participant_id, answer.assignment_id, filename)
+    return 'stage2/attachment/%s/%s/%s/%s' % (answer.participant_id, answer.assignment_id, instance.file_no, filename)

 
 
 class Attachment(models.Model):
 
 
 class Attachment(models.Model):


@@ -77,6 +255,9 @@ class Attachment(models.Model):
     file_no = models.IntegerField()
     file = models.FileField(upload_to=attachment_path)
 
     file_no = models.IntegerField()
     file = models.FileField(upload_to=attachment_path)
 

+    class Meta:
+        ordering = ['file_no']
+

     def filename(self):
         return os.path.basename(self.file.name)
 
     def filename(self):
         return os.path.basename(self.file.name)
 


@@ -86,11 +267,21 @@ class Attachment(models.Model):
             args=(self.answer.assignment_id, self.file_no,
                   self.answer.participant_id, self.answer.participant.key))
 
             args=(self.answer.assignment_id, self.file_no,
                   self.answer.participant_id, self.answer.participant.key))
 

+    def expert_download_url(self):
+        return reverse('stage2_expert_download', args=[self.id])
+

 
 class Mark(models.Model):
 
 class Mark(models.Model):

-    expert = models.ForeignKey(User)
+    expert = models.ForeignKey(settings.AUTH_USER_MODEL)

     answer = models.ForeignKey(Answer)
     answer = models.ForeignKey(Answer)

-    points = models.DecimalField(max_digits=3, decimal_places=1)
+    criterion = models.ForeignKey(MarkCriterion)
+    points = models.DecimalField(verbose_name=_('points'), max_digits=3, decimal_places=1)

 
     class Meta:
 
     class Meta:

-        unique_together = ['expert', 'answer']
+        unique_together = ['expert', 'answer', 'criterion']
+
+
+@receiver(post_save, sender=Mark, dispatch_uid='update_answer')
+def update_answer(sender, **kwargs):
+    mark = kwargs['instance']
+    mark.answer.update_complete()